oblique triangles

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Across
  1. 4. solves triangles with at least two given sides
  2. 6. triangles with an obtuse angle
  3. 7. triangles where two angles and a non-included side are given
  4. 8. triangles without a 90 degree angle
  5. 9. triangles where two angles and their included side are given
Down
  1. 1. solves triangles given a side and its opposite angle
  2. 2. triangles where three sides are given
  3. 3. triangles with all angles acute
  4. 5. triangles where two sides and their included angle are given
  5. 7. triangles with the ambiguous case